In your php.ini file, is register_globals = On ? May be the problem in this case.

Otherwise, I notice you're using ezpublish_2_2_7 - if I remember right there was some major bug in that release - might be worth using 2.2.7.1 - http://developer.ez.no/filemanager/list/3/

Course I picked 2_2_6 for the article because I knew it was solid on Windows. If you want an easy life though, recommend installing exactly as I described in the tutorial, using phpdev5.